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0 C; <br /> Preliminary Arborist Report.Ponderosa Homes Hort Science,Inc. <br /> Valley Trails,Pleasanton Page 7 <br /> Table 3. Recommended action for trees. <br /> Valley Trails,Pleasanton CA. <br /> Tree Species Trunk Heritage? Recommended action <br /> No. Diameter <br /> (in.) <br /> 223 Coast redwood 16 No Remove,within grading <br /> 224 Coast redwood 12 No Remove,within grading <br /> 225 Coast redwood 14 No Remove,within grading <br /> 226 Coast redwood 15 No Remove,within grading <br /> 227 Coast redwood 16 No Remove,within grading <br /> 228 Coast redwood 15 No Remove,within grading <br /> 229 Coast redwood 14 No Remove,within grading <br /> 230 Coast redwood 16 No Remove,within grading <br /> 231 Coast redwood 22 Yes Remove,within grading <br /> 232 Coast redwood 16 No Remove,within grading <br /> 233 Coast redwood 16 No Remove,within grading <br /> 234 Coast live oak 27 Yes Preserve, 10'from grading. <br /> 235 Callery pear 9 No Preserve,5'from grading. <br /> 236 Gallery pear 9 No Preserve.5'from grading. <br /> 237 Callery pear 8 No Preserve,5'from grading. <br /> 238 Callery pear 11 No Preserve,5'from grading. <br /> 239 London plane 8 No Preserve.5'from grading. <br /> 240 London plane 8 No Preserve,5'from grading. <br /> 241 London plane 8 No Preserve,5'from grading. <br /> 242 Callery pear 7 No Preserve,5'from grading. <br /> 243 Gallery pear 16 No Preserve,outside impacts. <br /> 244 Coast redwood 18 Yes Preserve,10'from grading. <br /> 245 Chinese elm 15,13 Yes Preserve,5'from grading. <br /> 246 Calif.pepper 7,7,5,4 Yes Remove,within grading <br /> 247 Silver maple 20 Yes Preserve, 15'from grading. <br /> Appraisal of Value <br /> The City of Pleasanton requires that the value of all trees be established. To establish the value of <br /> the surveyed trees,I employed the standard methods found in Guide for Plant Appraisal,9th <br /> edition(published in 2000 by the International Society of Arboriculture,Savoy IL). In addition,I <br /> referred to Species Classification and Group Assignment(2004),a publication of the Western <br /> Chapter of the International Society of Arboriculture. These two documents outline the methods <br /> employed in tree appraisal. <br /> The value of landscape trees is based upon four factors: size,species,condition and location. <br /> Size is measured as trunk diameter,normally 54"above grade. The species factor considers the <br /> adaptability and appropriateness of the plant in the East Bay area. The Species Classification <br /> and Group Assignment lists recommended species ratings and evaluations. Condition reflects <br /> the health and structural integrity of the individual. The location factor considers the site, <br /> placement and contribution of the tree in its surrounding landscape.In this case,trees were located <br /> in a well maintained residential part of Pleasanton. <br />